All my tanks are low tech/low light & no added Co2 - I'm not interested in fast, pushed growth or frequent trims. Right now my main tank (the other two are temps until I get larger tanks running) is full of plant eaters, so I'm limited to certain less-tasty plants, no stems survive. Perhaps in future tanks though...even so, there is so much to learn from your tanks, the plant placements and the balance between plants and livestock.